I bought a half dollar off someone that came in a cracked snap-lock. There is a logo that is sand-etched on one side. Really dumb because it covers up most of one side. I asked the guy about the logo, and he said "oh that's just the logo of the grading company".
It's NOT a grading company at all, but probably just some dealers attempt to brand the coins they sell with their name / company name while the coins are in the holder. It's promotional.
It's missing a whole lot more than that... a grade, a coin for us to grade, a label with any information, a certification number, and a TPGs reputation that suggests that anything on said label is remotely accurate...
No doubt, it's the logo of some company that acquired a bunch of coins and placed in a snap lock holder with their logo on it for marketing. Not a grading company at all. Even the basement graders like SGS, use regular slabs like PCGS and NGC use only a different type of slab.
Not all of them. One company used a 2X2 size plastic holder, sealed, with a 2X2 plastic ribbon coming out of it that acted as the label. At least two companies used a regular 2X2 cardboard holder, placed the label above it and then ran the whole thing through a heat laminator. Then there was one that used three sheets of plexiglas. They drilled holes for the coins in the middle sheet, put the label above the coin and the glued the three layers together. Then cut the now sandwiched sheet down into the individual slabs with a bandsaw and beveled the edges with a belt sander.
